//函数名：无
//功能介绍：用键盘方向键←和实现→翻页
//参数说明：上一页，下一页
//返回值：无

var re = /<a href=[\"\']?([-\w\.\/\?]+)[\"\']?>[\[\(<]?Forward[\]\)>]?<\/a>/igm;
if (window.document.body.innerHTML.search(re) >= 0) {
	var PREVIOUS_PAGE = RegExp.$1;
}

var re = /<a href=[\"\']?([-\w\.\/\?]+)[\"\']?>[\[\(<]?Next[\]\)>]?<\/a>/igm;
if (window.document.body.innerHTML.search(re) >= 0) {
	var NEXT_PAGE = RegExp.$1;
}

if (typeof PREVIOUS_PAGE == "string" || typeof NEXT_PAGE == "string") {
	document.onkeydown = function() {
		switch (event.srcElement.tagName) {
			case "INPUT":
			case "TEXTAREA":
			case "SELECT":
				break;
			default:
				if (event.keyCode == 37 /* Arrow Left*/ && typeof PREVIOUS_PAGE == "string") {
					window.location.href = PREVIOUS_PAGE;
				}
				else if (event.keyCode == 39 /* Arrow Right */ && typeof NEXT_PAGE == "string") {
					window.location.href = NEXT_PAGE;
				}
		}
	}
}